I’m sorry but trying to explain the different parts of doing this job is not something I can do anymore. I’m also well north of 70 and trying to remember all the different steps, without having a unit in front of me, does not work any more. I can picture the procedure, but when I try to explain what needs to be done will leave too many holes in my explanation. On top of that, I’m just out of the hospital, after a bout of septus in my abdominal cavity, six months of recovery. Lost 30 lbs of weight and energy level is below 00000. Good luck, sorry I’m not much help.